TM-9-2520-270-34

HYDROMECHANICAL CROSSDRIVE, TRANSMISSION HMPT 500 AND TRANSMISSlON CONTAINER ASSEMBLY

TECHNICAL MANUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE

NOVEMBER 1984

TM-9-2520-270-34 - Page 612 of 933

14. CHECK 10 STATIONARY BRAKE

PLATES (1).

a. Using micrometer caliper set,

measure thickness of each plate (1)

in three places. Replace all 19 plates

if any plate measures less than

0.080 inch (2.03 mm), and go to step 16.

b. Using flat surface, and feeler gage,

check for warpage on both inside and

outside edges. Replace all 19 plates if

warpage of any plate (1) is greater

than 0.010 inch (.25 mm), go to step 16.

16. REMOVE INNER SPRING RETAINER (3)

AND SPRING RETAINER PLATE (4).

a.

b.

c

.

Using 3/8-inch drive brace handle and

7/16-inch socket, loosen six screws (5).

Loosen two turns at a time to

evenly relieve spring pressure.

Remove six screws (5) and

washers (6).

Remove retainer

and plate (4).

(3), 10 springs (7),

15. CHECK NINE ROTATING BRAKE

PLATES (2).

a.

b.

Using micrometer caliper set,

measure thickness of each plate (2)

in three places. Replace all 19 plates if

any plate (2) measures less than

0.093 inch (2.36 mm), and go to

step 16.

Using flat surface and feeler gage,

check for warpage on both inside and

outside edges. Replace all 19 plates if

warpage of any plate (2) is greater than

0.010 inch (.25 mm).

17. CHECK 10 SPRINGS (7).

a. Using indicator caliper, measure free

length of spring (7). Replace spring

if free length is less than 1.5 inch

(38 mm).

I

b. Repeat step

GO TO NEXT PAGE

17a for all

springs (7).

4-283

TM 9-2520-270-34